Which of the following statements is/are true for Tensiometer?
A. It measures soil water potential.
B. It is simple in operation and very useful for scheduling irrigation.
C. It can also be used for measuring soil water flux.
D. Although limited to <1 bar matric potential, this range can be increased by increasing permeability of porous cup.
Choose the correct answer:

Correct option is A

A tensiometer measures soil water tension (matric potential) and is ideal for irrigated crops.
It is simple and cost-effective, suitable for irrigation scheduling.
It can indirectly help assess water flux trends, though it doesn’t directly measure flux.
Its operational range is limited to <1 bar; increasing cup permeability doesn’t expand this range—making statement D incorrect.